This is one of the best iRobot vacuums you can get. With its $799 price tag, it's prohibitively expensive. However, with this early Prime Day deal, you can save 50% off the regular price, leaving you with a high-end vacuum and mop for just $399.

Amazon Prime Day typically brings great discounts on all sorts of electronics, but it’s a good idea to go for the expensive gear first. We consider robot vacuums to be in that category because, while there are solid affordable models available today,

As of July 3, the iRobot Roomba Plus 405 is on sale for $399.99. This deal saves you $400 on list price, and is the lowest-ever price according to camelcamelcamel. Our robot vacuum expert has hand-picked this deal as one of the best ahead of Prime Day.